Datasheet

www.tektronix.com/dmm4050_4040 11
Digital Multimeters – Tektronix DMM4050 and DMM4040
AC Current
The following AC current specifications are for sinusoidal signals with amplitudes
greater than 5% of range. For inputs from 1% to 5% of range, add an additional
error of 0.1% of range.
Characteristic Description
Input Protection Tool-accessible 11 A / 1000 V and 440 mA / 1000 V fuses,
limits of 400 mA continuous 550 mA for 2 minutes on,
1minute off
Measurement Method AC-coupled true RMS, DC-coupled to the fuse and shunt
(noblocking capacitor)
AC Filter Bandwidth
Slow 3 Hz to 10 kHz
Medium 20 Hz to 10 kHz
Fast 200 Hz to 10 kHz
Maximum Crest Factor 5:1 at Full Scale
Additional Crest Factor
Errors (<100 Hz)
Crest factor 1–2, 0.05% of full scale
Crest factor 2–3, 0.2% of full scale
Crest factor 3–4, 0.4% of full scale
Crest factor 4–5, 0.5% of full scale
Only applies to non-sinusoid signals
Input Characteristics
Range Resolution Resolution Shunt Resistance
(Ohms)
Burden Voltage
4½ Digits 5½ Digits 6½ Digits
100 μA 100.0000 μA 10 nA 1 nA 100 pA 100 Ω <0.015 V
1 mA 1.000000 mA 100 nA 10 nA 1 nA 100 Ω <0.15 V
10 mA 10.00000 mA 1 μA 100 nA 10 nA 1 Ω <0.025 V
100 mA 100.0000 mA 10 μA 1 μA 100 nA 1 Ω <0.25 V
400 mA*
9
400.000 mA 100 μA 10 μA 1 μA 1 Ω <0.50 V
1 A*
8
1.000000 A 100 μA 10 μA 1 μA 0.01 Ω <0.05 V
3 A*
5,8
3.00000 A 1 mA 100 μA 10 μA 0.01 Ω <0.05 V
10 A*
8
10.00000 A 1 mA 100 μA 10 μA 0.01 Ω <0.5 V
*
5
Part of 10 A range.
*
8
Available at front-panel connectors only.
*
9
400 mA available in software version 1.0.700.18 or greater only. 400 mA continuously; 550 mA for 2 minutes on, 1 minute off; maximum crest factor 3:1 at 400 mA.